I have a server with Moodle 3.5.x that was installed and configured just downloading and installing the files. Server is with Ubuntu 16.04.4 LTS and PHP 7.1
To facilitate future updates of the core I would like to add GIT to this installation and update in the future simply with "GIT Pull" (i have other servers in that way).
Would it be enough to follow the instructions of https://docs.moodle.org/35/en/Git_for_Administrators? Or that instructions are only for new installations?
My intention is to first upgrade to the latest version 3.5.x and in the near future migrate from 3.5.x to 3.8.x.
Thank you very much,